Filter.



Patented Oct. 3, |899.

E. A. LeLANn.

FILTER.

Apllicl'tion led J une 5, 1899.,

(no mm.)

' INVENTOR oww ` wlTNEssEs QM@ 'ATTQRNEY i me norms PsYzRs cn. Wmo-umn., wAsNmarou. u. cA

Y paratns, taken in the linea" w of Fig. l.

vUivirmj STATES :PATENT OFFICE.

f EDWIN A. LELAND, OF GREATIBARRINGTON, MASSACHUSETTS.

FILTER.

- SPECIFICATION 'forming part of Letters Patent No. 634,060, dated Oei-,Ober 3, 1899.

Application Vfiled. June 5, 1899..

To all whem it may concern,.-

Be it known that I, EDWIN A. LELAND, a citizen of the United States, residing at Great Barrington, in the county of Berkshire and State of Massachusetts, have invented certain new and useful Improvements in Filters; and I do hereby declare that the following is a full, clearand exact description Aof the same, reference being had to the accompanying drawings, making a part ofV this specification, in which- Figure l is a vvertical sectional View of a filter made according to my invention. Fig. 2 is a detail view of one part thereof. Fig. 3 is a sectional view of certain parts of the ap- This invention Vis designed to vprovide an economical, eiective, and easily-manipulated means for cleaning lters when clogged with mechanical impurities, and to that end it. comprises certain new and ,usefulV combinations cf parts hereinafter fully set forth and explained. 1 l y A is the cylindrical shell or case of a filter. This shell couplesl upon an internally-screwthreaded pipe-section B by means of a coupling-nut C, which screws upon the lower end of the shell and has an internal liange a4, which grips below an external flanges b4 at the upper end of said pipe-section, and thereby connects the latter to the shell and grips the flanges h and f, hereinafter described, against the end of the shell, for purposes hereinafter explained. Onto the pipe-section B is screwed the upper end ol a pipe section D, the threaded lower end of which screws into the upper end of a T-section F, to which is appended an inlet-pipe E, through and from which the liquid to be ltered passes to the apparatus. The lower end of the T-section F screws upon the upper end of a tube G, which is closed at its bottom, as shown at ns, and which forms a receptacle for silt and other mechanical impurities which by reason of f their gravity fall from the filter. The arrangementeof the several threaded or screw sections just described enables the filter and its adjuncts to be readily detached from the supply-pipes to permit the removal of mechanical impurities from the apparatus, as herein presently to be described. The upper end of the shell A is screwed into the daring Serial lilo. 71971389. (No model.)

adjunct coupling A2 of an outlet or distributing pipe B2.

Within the shell A is a filtering apparatus composed of two concentric foraminated cyl- .inders a-andrb, which may be most conven- Below this cap and extended across said cyly inder isa cross-bar d, at the center of which is a downwardly-projecting stud a'. The inner cylinder is capped or closed at its upper end and Vhas inits top or cap e a recess b'.

This recess is so arranged as to receive the stud a.' in such amanner that the stud holds the inner cylinder b equidistantV from the outer cylinder a around its entire circumference, and thereby insures the requisite uniformity throughout in the thickness of one quently of the filtering material. The space between thepcap of the inner cylinder and the top of the outer cylinder should be filled with ltering material, as indicated in Fig. 1. The space between the two cylinders is closed at bottom, as shown atc', and iiange f, extended outward from the outer cylinder and clamped between the lower end of4 the shell A and the upper face of the section B, firmly holds the lower parts of the filtering devices and of the strainer, herein yet to be described, in position. The Vupper face of the section B is internally channeled or rabbeted, as shown at g in Fig. l.

Shown in longitudinal section in Fig. l and separately in side view in Fig. 2 is a cylindrical foraminated strainer F, made, preferably, of wire-cloth, closed at top, as shown at and having at its lower end an outwardlyspace between the two cylinders, and conseextended liange h. The size and proportions e of this strainerv are such as to enable it to be passed withinrthe inner cylinder b, with its lflange h placed in' the rabbet g of the section B temere irmly secure the retention of the strainer in place. The strainermay iit more or less snugly within the cylinder. b or -may be in any desired proximity to the inner IOO . 3o Y temporary removal and cleaning of the surface thereof. The flange h of the strainer serves the further important purpose of pre-k venting communication betweenr the filter and its inlet except through thel meshes or foram'inations of the straineigas will be nnderstood'in referring toFig. l. f The strainer is removable, inasmuch as it may be easily taken out of the cylinder b by first uncouplingy the shell A, from the k'section B. Of course ythe strainer may be placedl or replaced yin the cylinder b by a similar Vdisconnection ofthe shell from the section B.

The Water (or other liquid) to be filtered enters the apparatusy from the inletV E andV l I5 passes through the strainer F, the latter sepa'- rating all mechanical impurities which are too. large to pass through itsmeshes or perforations, they grosser particlesfbeing perkrnitted to fall into the receptacle G, while others may adhere to the inner surface of the strainer. By this means the 'filtering de vicesi. c., thefforaminated lcylinders c and 'i fo andthe ltering Vmaterial c-are kept clear of impurities and particles of matter which, as.

found by experience,would otherwise inevitably clog'them andimpair their action. When an impaired action due to accumulation of de positsupon the strainer is observed, thefshell A is separated from the adjacent parts, as hereinloeforey described. Thisk permitsv the strainer F, and also affords accessto the re-r ceptacle'G topermit the accumulated contentsy of. the-latter to he taken away. By, this means the filtering devic'esare madey capable of indefinite use withnoappreciable diminution of"y their filtering capacity.

What I claim as my invention isl. The combination with two foraininated concentric cylinders, a granular filtering material in a space betweensaidcylinders and a shell inclosing the cylinders with a space between itself and the outer cylinder, of a cylindrical strainer tted within the inner cylflange, and a pipesection arranged to grip the flange between the end of the pipe-section and the adjacent' end of' the shell, vsubstantially as herein set forth. n

2. yA filter composed of any outer joraminatcd cylindenc, provided at its closed top inder, closed at one of itsends and. having 45V lat its opposite end-an outwardlylextended,

, with a cross-bar having an inwardly-projectl ing stud, n', an yinner foraminated cylinder,

h, having at its top a recess toreceive the stud, c,.a filtering material between the two cylinders, and a shellA-, vhaving a space-he-y tween .itselt and the outer cylinder,'ct, of a" removable strainer, F,havng a flange, h, and located within the innercylindeDof theilter with its flange extended under the lower end thereof, and means for gripping said iange f against saidlower end' to retainthe strainer in place, substantially asherein set forth- 3. yThe combination With a filter composed '63 of an outer foraminated cylinder, d," provided at its top with a cross-bar haringen inwardly-y projecting stud, a', and constructed at yits bottom with an outwardly-'extended flange,v

an inner foraminated cylinder, b, having at its top a Vrecess to receive Vthe stud, a', a filtering material between the .two cylinders,

and a shell, A, having a space loetweenitselif` and-the outer cylinden'of a reinovable'cylinf f drical strainer F, having a flange, 71,. andlocated within the inner cylinder of the filter 

